taxes Property Tax Assistance

2017 Confidence Interval Detail

168/Mitchell
168-903/Westbrook ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 8,823,520 1.0124 8,715,448 10 237 .049081595
A 8,691,370 0.9371 9,274,752 11 131 .008692182
A 9,243,710 0.9615 9,613,843 8 89 .007809257
A 8,586,250 0.9891 8,680,871 9 45 .006354101
E 16,593,111 1.1142 14,892,399 14 233 .024818267
G1 13,256,371 0.9930 13,349,820 6 14 .001557165
G1 11,901,330 1.0092 11,792,836 2 3 .000053159
Random Totals: 77,095,662   76,319,969 60 752  
Catg J Exception Values: 22,065,300   28,304,430      
Catg D1 Exception Values: 12,543,330   14,408,211      
Catg G1 Exception Values: 96,208,213   92,114,991      
Total Test Values (4): 207,912,505   211,147,601      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,557,380

Confidence Interval Values (5)

State Lower Limit: 200,590,221 (State Test Value minus Margin of Error Percent)
Local Test Value: 207,912,505 (Within Confidence Interval)
State Upper Limit: 221,704,981 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 265,858,362 (See ISD Summary Worksheet)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories